Sam has a box shaped like a rectangular prism. It measures 1
6
inches in height, 1
3
in. wide and 1
2
in.
long. What is the volume of the box? Leave your answer as an improper fraction.

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?